/*body{background: #f3f4f6;}*/
header {
	height: 83px;
}

.ab {
	background: none !important;
}

.sev_bottom li a {
	position: relative;
	display: inline-block;
	outline: none;
	z-index: 9999;
	width: 60%;
	height: 280px;
	padding-top: 3.09%;
}

.sev_bottom li a:hover::before {
	background: url(../img/hover.png) no-repeat;
	width: 288px;
	height: 288px;
	z-index: 9999;
	position: absolute;
	content: "";
	left: -10px;
}